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Cetacean Dorsal Fin Size

Have you ever wondered why some cetaceans completely lack a dorsal fin?
While some have massive dorsal fins?
The diversity of cetacean fin size is a continuum, that ranges from huge to non-existent.
A comprehensive answer depends on an array of evolutionary factors.
Here, we will examine some of these selective pressures.

Scientific Classification:
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Clade: Cetaceamorpha
Infraorder: Cetacea

Chapters:
0:00 - Introduction
0:24 - What is a Dorsal Fin?
0:47 - Orca
1:00 - Atlantic White Sided Dolphin
1:18 - Small Dorsal Fin
1:38 - Amazon River Dolphin
1:57 - No Dorsal Fin
2:45 - Regulation of Body Temperature
3:02 - Pilot Whale
3:27 - Outro

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